diff --git a/UpdatePTUDevCtrl/worker.cpp b/UpdatePTUDevCtrl/worker.cpp
index 21a2673..af115cd 100644
--- a/UpdatePTUDevCtrl/worker.cpp
+++ b/UpdatePTUDevCtrl/worker.cpp
@@ -1082,7 +1082,7 @@ bool Worker::syncCustomerRepositoryAndFS() {
                 // now check tariff-files in etc and /etc/psa_tariff
                 QDir dir1(QDir::cleanPath(m_customerRepository + QDir::separator() + "etc/psa_tariff"));
                 QDir dir2("/etc/psa_tariff");
-                if (Utils::sameFilesInDirs(dir1, dir2)) {
+                if (Utils::sameFilesInDirs(dir1, dir2) == false) {
                     CONSOLE() <<  QDir::cleanPath(m_customerRepository + QDir::separator() + "etc/psa_tariff")
                               << "AND /etc/psa_tariff ARE DIFFERENT: CHANGED CUSTOMER-NUMBER?";
                 }